Service Manual

ZT-2800
®
/ZT-3100/ZT-3400™ 11
This transaxle is designed with an external lter
for ease of maintenance. To ensure constant
uid quality levels and longer life, an initial oil
and lter change at 75-100 hours, then every
400 hours thereafter is recommended.
The following procedure can be performed
with the transaxles installed in the vehicle, and
the vehicle on level ground. Apply the bypass
valve for each transaxle and lock the vehicle
parking brake.
1. Remove the three 1/4” lter guard screws
and lter guard. Clean any loose debris from
around the perimeter of the lter. See gures
5 and 6.
2. Place an oil drain pan (12” or more diam-
eter and 8 qt. capacity is optimal) beneath
the oil lter. Remove the oil lter from the
transaxle.
3. After the oil has drained, wipe the lter base
surface off and apply a lm of new oil to the
gasket of the new replacement lter (Hydro-
Gear part number 52114).
4. Install the new lter by hand, turn 3/4 to one
full turn after the lter gasket contacts the
lter base surface.
5. Re-install the lter guard with three 1/4”
screws. Torque screws to 65 in. lbs.
(7.3 Nm) each.
6. Repeat steps 1-5 on the opposite side
transaxle drive.
7. Drain old oil lters of all free owing oil prior
to disposal. Place used oil in appropriate
containers and deliver to an approved re-
cycling collection facility.
8. Remove the top port plug (gure 6) from the
left side and right side transaxles prior to
lling with oil. This will allow the transaxles
to vent during oil ll.
9. Remove the cap from the transaxle’s expan-
sion tank located on the vehicle frame.
10. Fill with 20W50 motor oil until oil just ap-
pears at the bottom of each transaxle’s top
port (approximately 2 qts. per transaxle, 4
qts. total). Install the top port plug into each
transaxle as the oil level reaches this port.
See Figure 6.
11. Install and torque the top port plugs to 180
in. lbs. (20.3 Nm).
12. Continue to ll the transaxles through the
expansion tank until the “Full Cold” line is
reached on the Hydro-Gear expansion tank
(refer to vehicle owner’s manual for specic
volumes).
13. Re-install the expansion tank cap by hand.
Be careful to not overtighten.
14. Proceed to the purge procedure.
FLUID CHANGE PROCEDURE
Figure 5, Filter Location Figure 6, Filter And Filter Guard
(GuardRemovedForVisualClarity)
Filter
Filter
Filter Guard
Screws
Top Port Plug